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+<div class="titlepage"><div><div><h4 class="title">
+<a name="boost_asio.reference.basic_streambuf.prepare"></a><a class="link" href="prepare.html" title="basic_streambuf::prepare">basic_streambuf::prepare</a>
+</h4></div></div></div>
+<p>
+ <a class="indexterm" name="id1238547"></a>
+Get a list of buffers that represents the output
+ sequence, with the given size.
+ </p>
+<pre class="programlisting"><span class="identifier">mutable_buffers_type</span> <span class="identifier">prepare</span><span class="special">(</span>
+ <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">n</span><span class="special">);</span>
+</pre>
+<p>
+ Ensures that the output sequence can accommodate <code class="computeroutput"><span class="identifier">n</span></code>
+ characters, reallocating character array objects as necessary.
+ </p>
+<h6>
+<a name="boost_asio.reference.basic_streambuf.prepare.h0"></a>
+ <span><a name="boost_asio.reference.basic_streambuf.prepare.return_value"></a></span><a class="link" href="prepare.html#boost_asio.reference.basic_streambuf.prepare.return_value">Return
+ Value</a>
+ </h6>
+<p>
+ An object of type <code class="computeroutput"><span class="identifier">mutable_buffers_type</span></code>
+ that satisfies MutableBufferSequence requirements, representing character
+ array objects at the start of the output sequence such that the sum of
+ the buffer sizes is <code class="computeroutput"><span class="identifier">n</span></code>.
+ </p>
+<h6>
+<a name="boost_asio.reference.basic_streambuf.prepare.h1"></a>
+ <span><a name="boost_asio.reference.basic_streambuf.prepare.exceptions"></a></span><a class="link" href="prepare.html#boost_asio.reference.basic_streambuf.prepare.exceptions">Exceptions</a>
+ </h6>
+<div class="variablelist">
+<p class="title"><b></b></p>
+<dl>
+<dt><span class="term">std::length_error</span></dt>
+<dd><p>
+ If <code class="computeroutput"><span class="identifier">size</span><span class="special">()</span>
+ <span class="special">+</span> <span class="identifier">n</span>
+ <span class="special">&gt;</span> <span class="identifier">max_size</span><span class="special">()</span></code>.
+ </p></dd>
+</dl>
+</div>
+<h6>
+<a name="boost_asio.reference.basic_streambuf.prepare.h2"></a>
+ <span><a name="boost_asio.reference.basic_streambuf.prepare.remarks"></a></span><a class="link" href="prepare.html#boost_asio.reference.basic_streambuf.prepare.remarks">Remarks</a>
+ </h6>
+<p>
+ The returned object is invalidated by any <code class="computeroutput"><span class="identifier">basic_streambuf</span></code>
+ member function that modifies the input sequence or output sequence.
+ </p>
+</div>
+<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
+<td align="left"></td>
+<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2012 Christopher M. Kohlhoff<p>
+ Distributed under the Boost Software License, Version 1.0. (See accompanying
+ file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
+ </p>
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